1 ;;;; grob-description.scm -- part of generated backend documentation
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
6 ;;;; Jan Nieuwenhuizen <janneke@gnu.org>
8 ; distances are given in stafflinethickness (thicknesses) and
9 ; staffspace (distances)
11 (define all-grob-descriptions
14 (molecule-callback . ,Local_key_item::brew_molecule)
15 (X-offset-callbacks . (,Side_position_interface::aligned_side))
16 (after-line-breaking-callback . ,Local_key_item::after_line_breaking)
20 (meta . ,(grob-description "Accidentals" accidentals-interface font-interface side-position-interface))
24 (X-extent-callback . ,Arpeggio::width_callback)
25 (Y-extent-callback . #f)
26 (molecule-callback . ,Arpeggio::brew_molecule)
27 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
28 (X-offset-callbacks . (,Side_position_interface::aligned_side))
30 (staff-position . 0.0)
31 (meta . ,(grob-description "Arpeggio" arpeggio-interface side-position-interface font-interface))
34 (autoBeamSettings . ,auto-beam-settings)
37 (break-align-symbol . Staff_bar)
39 (break-glyph-function . ,default-break-barline)
40 (bar-size-procedure . ,Bar::get_staff_bar_size)
41 (molecule-callback . ,Bar::brew_molecule)
42 (visibility-lambda . ,all-visible)
44 (before-line-breaking-callback . ,Bar::before_line_breaking)
46 ;; Ross. page 151 lists other values, we opt for a leaner look
50 (hair-thickness . 1.6)
51 (thick-thickness . 6.0)
52 (meta . ,(grob-description "BarLine" bar-line-interface font-interface))
56 (molecule-callback . ,Text_item::brew_molecule)
58 (visibility-lambda . ,begin-of-line-visible)
62 (font-relative-size . -1)
63 (Y-offset-callbacks . (,Side_position_interface::aligned_side))
64 (meta . ,(grob-description "BarNumber"
65 side-position-interface
66 text-interface font-interface break-aligned-interface))
70 ;; todo: clean this up a bit: the list is getting
72 (molecule-callback . ,Beam::brew_molecule)
73 (y-dy-callbacks . (,Beam::least_squares
74 ,Beam::cancel_suspect_slope
78 ,Beam::do_quantise_y))
80 (thickness . 0.48) ; in staff-space
81 (before-line-breaking-callback . ,Beam::before_line_breaking)
82 (after-line-breaking-callback . ,Beam::after_line_breaking)
83 (neutral-direction . 1)
84 (dir-function . ,beam-dir-majority)
85 (height-quants . ,default-beam-dy-quants)
86 (vertical-position-quant-function . ,default-beam-y-quants)
87 (beamed-stem-shorten . (0.5))
88 (outer-stem-length-limit . 0.2)
90 (flag-width-function . ,default-beam-flag-width-function)
91 (space-function . ,default-beam-space-function)
94 (meta . ,(grob-description "Beam" beam-interface))
101 (space-alist . ,default-break-align-space-alist)
102 (meta . ,(grob-description "BreakAlignment"
103 axis-group-interface align-interface
110 (X-offset-callbacks . (,Break_align_interface::alignment_callback))
112 (meta . ,(grob-description "BreakAlignGroup" axis-group-interface))
116 (break-align-symbol . Breathing_sign)
118 (molecule-callback . ,Breathing_sign::brew_molecule)
119 (Y-offset-callbacks . (,Breathing_sign::offset_callback))
120 (visibility-lambda . ,begin-of-line-invisible)
121 (meta . ,(grob-description "BreathingSign" break-aligned-interface))
125 (molecule-callback . ,Clef::brew_molecule)
126 (before-line-breaking-callback . ,Clef::before_line_breaking)
128 (font-family . music)
129 (break-align-symbol . Clef_item)
130 (visibility-lambda . ,begin-of-line-visible)
131 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
132 (meta . ,(grob-description "Clef" clef-interface font-interface break-aligned-interface ))
136 (molecule-callback . ,Chord_name::brew_molecule)
137 (after-line-breaking-callback . ,Chord_name::after_line_breaking)
138 (chord-name-function . ,default-chord-name-function)
139 (font-family . roman)
140 (meta . ,(grob-description "ChordName" font-interface text-interface chord-name-interface))
144 (break-align-symbol . Custos)
146 (molecule-callback . ,Custos::brew_molecule)
147 (visibility-lambda . ,end-of-line-visible)
149 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
150 (meta . ,(grob-description "Custos" custos-interface staff-symbol-referencer-interface break-aligned-interface) )
156 (meta . ,(grob-description "DotColumn" dot-column-interface axis-group-interface))
160 (molecule-callback . ,Dots::brew_molecule)
162 (staff-position . 0.0)
163 (Y-offset-callbacks . (,Dots::quantised_position_callback ,Staff_symbol_referencer::callback))
164 (meta . ,(grob-description "Dots" font-interface dots-interface ))
167 . ((molecule-callback . ,Percent_repeat_item_interface::double_percent)
170 (font-family . music)
173 (break-align-symbol . Staff_bar)
174 (visibility-lambda . ,begin-of-line-invisible)
175 (meta . ,(grob-description "DoublePercentRepeat" font-interface percent-repeat-interface))
179 (Y-offset-callbacks . (,Side_position_interface::aligned_on_self))
180 (molecule-callback . ,Text_item::brew_molecule)
181 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
182 (self-alignment-X . 0)
184 (no-spacing-rods . #t)
185 (script-priority . 100)
187 (font-family . dynamic)
188 (font-shape . italic)
189 (self-alignment-Y . 0)
190 (meta . ,(grob-description "DynamicText" font-interface text-interface dynamic-interface))
193 (DynamicLineSpanner . (
196 (minimum-space . 1.2)
198 (meta . ,(grob-description "DynamicLineSpanner" dynamic-interface axis-group-interface side-position-interface))
202 (break-align-symbol . Left_edge_item)
203 (X-offset-callbacks . (,Break_align_interface::alignment_callback))
205 (meta . ,(grob-description "LeftEdge" break-aligned-interface))
209 (molecule-callback . ,Text_item::brew_molecule)
210 (X-offset-callbacks . (,Side_position_interface::centered_on_parent ,Side_position_interface::aligned_on_self))
213 (self-alignment-X . 0)
214 (font-family . number)
215 (font-relative-size . -3)
216 (font-shape . upright)
217 (meta . ,(grob-description "Fingering" finger-interface font-interface text-script-interface text-interface side-position-interface))
222 (horizontal-space . 1.2)
224 (before-line-breaking-callback . ,Grace_align_item::before_line_breaking)
225 (meta . ,(grob-description "GraceAlignment" axis-group-interface align-interface grace-alignment-interface))
228 (HaraKiriVerticalGroup . (
229 (Y-offset-callbacks . (,Hara_kiri_group_spanner::force_hara_kiri_callback))
230 (Y-extent-callback . ,Hara_kiri_group_spanner::y_extent)
232 (meta . ,(grob-description "HaraKiriVerticalGroup" axis-group-interface hara-kiri-group-interface))
235 (molecule-callback . ,Hairpin::brew_molecule)
238 (spacing-procedure . ,Spanner::set_spacing_rods)
239 (minimum-length . 2.0)
240 (if-text-padding . 1.0)
241 (width-correct . -1.0)
243 (dash-thickness . 1.2)
245 (self-alignment-Y . 0)
246 (Y-offset-callbacks . (,Side_position_interface::aligned_on_self))
247 (meta . ,(grob-description "Hairpin" hairpin-interface dynamic-interface))
252 (Y-offset-callbacks . (,Side_position_interface::aligned_on_self
253 ,Side_position_interface::aligned_on_support_refpoints
256 (self-alignment-Y . 0)
257 (molecule-callback . ,Text_item::brew_molecule)
258 (break-align-symbol . Instrument_name)
259 (visibility-lambda . ,begin-of-line-visible)
261 (font-family . roman)
262 (meta . ,(grob-description "InstrumentName" font-interface text-interface break-aligned-interface))
266 (molecule-callback . ,Key_item::brew_molecule)
267 (break-align-symbol . Key_item)
268 (visibility-lambda . ,begin-of-line-visible)
270 (meta . ,(grob-description "KeySignature" key-signature-interface font-interface break-aligned-interface))
277 (minimum-length . 0.5)
278 (maximum-length . 100)
279 (molecule-callback . ,Hyphen_spanner::brew_molecule)
280 (Y-extent-callback . ,Grob::point_dimension_callback)
281 (meta . ,(grob-description "LyricHyphen" lyric-hyphen-interface ))
286 (meta . ,(grob-description "LineOfScore" line-of-score-interface axis-group-interface))
290 (molecule-callback . ,Lyric_extender::brew_molecule)
291 (height . 0.8) ; stafflinethickness;
292 (right-trim-amount . 0.5)
293 (Y-extent-callback . ,Grob::point_dimension_callback)
294 (meta . ,(grob-description "LyricExtender" lyric-extender-interface))
298 (molecule-callback . ,Text_item::brew_molecule)
299 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
300 (self-alignment-X . 0)
303 (font-family . roman)
304 (font-shape . upright)
305 (meta . ,(grob-description "LyricText" lyric-syllable-interface text-interface font-interface ))
309 (molecule-callback . ,Text_item::brew_molecule)
310 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
311 (self-alignment-X . 0)
315 (font-family . number)
316 (font-shape . upright)
317 (font-relative-size . 1)
318 (visibility-lambda . ,end-of-line-invisible)
320 (meta . ,(grob-description "RehearsalMark" mark-interface side-position-interface))
323 (MultiMeasureRest . (
324 (spacing-procedure . ,Multi_measure_rest::set_spacing_rods)
325 (molecule-callback . ,Multi_measure_rest::brew_molecule)
326 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
329 (padding . 2.0) ; staffspace
330 (minimum-width . 12.5) ; staffspace
331 (font-family . number)
332 (font-relative-size . 1)
333 (meta . ,(grob-description "MultiMeasureRest" multi-measure-rest-interface rest-interface font-interface ))
338 (meta . ,(grob-description "NoteCollision"
339 note-collision-interface axis-group-interface
345 (meta . ,(grob-description "NoteColumn" axis-group-interface note-column-interface))
350 (molecule-callback . ,Note_head::brew_molecule)
351 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
352 (stem-attachment-function
353 . ,note-head-style->attachment-coordinates)
354 (meta . ,(grob-description "NoteHead"
355 rhythmic-head-interface font-interface
356 note-head-interface ))
362 (X-extent-callback . #f)
363 (Y-extent-callback . #f)
364 (molecule-callback . ,Line_spanner::brew_molecule)
365 (meta . ,(grob-description "Glissando"
366 line-spanner-interface))
372 (X-extent-callback . #f)
373 (Y-extent-callback . #f)
374 (molecule-callback . ,Line_spanner::brew_molecule)
375 (meta . ,(grob-description "VoiceFollower"
376 line-spanner-interface))
380 (molecule-callback . ,Text_item::brew_molecule)
381 (font-family . roman)
382 (meta . ,(grob-description "NoteName"
383 note-name-interface font-interface
388 (self-alignment-X . 0)
390 (visibility-lambda . ,begin-of-line-visible)
391 (X-offset-callbacks . (,Side_position_interface::centered_on_parent ,Side_position_interface::aligned_on_self))
392 (Y-offset-callbacks . (,Side_position_interface::aligned_side))
393 (molecule-callback . ,Text_item::brew_molecule)
394 (font-shape . italic)
395 (font-family . roman)
396 (meta . ,(grob-description "OctavateEight" text-interface font-interface ))
401 (before-grace-spacing-factor . 1.2)
402 (before-musical-spacing-factor . 0.4)
403 (meta . ,(grob-description "PaperColumn" paper-column-interface axis-group-interface spaceable-element-interface))
406 (molecule-callback . ,Slur::brew_molecule)
408 (spacing-procedure . ,Spanner::set_spacing_rods)
409 (minimum-length . 1.5)
410 (after-line-breaking-callback . ,Slur::after_line_breaking)
411 (extremity-rules . ,default-slur-extremity-rules)
412 (extremity-offset-alist . ,default-phrasing-slur-extremity-offset-alist)
413 (de-uglify-parameters . ( 1.5 0.8 -2.0))
414 (Y-extent-callback . ,Slur::height)
415 (details . ((height-limit . 2.0) (ratio . 0.333) (force-blowfit . 0.5)
416 (bezier-pct-c0 . -0.2) (bezier-pct-c3 . 0.000006)
417 (bezier-pct-out-max . 0.8) (bezier-pct-in-max . 1.2)
418 (bezier-area-steps . 1.0)))
421 (attachment . (#f . #f))
422 (attachment-offset . ((0 . 0) . (0 . 0)))
424 (meta . ,(grob-description "PhrasingSlur" slur-interface))
427 (NonMusicalPaperColumn . (
429 (before-musical-spacing-factor . 1.0)
430 (column-space-strength . 2.0)
431 (meta . ,(grob-description "NonMusicalPaperColumn" paper-column-interface axis-group-interface spaceable-element-interface))
435 (spacing-procedure . ,Multi_measure_rest::set_spacing_rods)
436 (molecule-callback . ,Multi_measure_rest::percent)
439 (minimum-width . 12.5) ; staffspace
440 (font-family . music)
441 (meta . ,(grob-description "PercentRepeat" multi-measure-rest-interface font-interface percent-repeat-interface))
446 (molecule-callback . , Percent_repeat_item_interface::beat_slash)
449 (meta . ,(grob-description "RepeatSlash" percent-repeat-interface))
452 (after-line-breaking-callback . ,Rest::after_line_breaking)
453 (X-extent-callback . ,Rest::extent_callback)
454 (Y-extent-callback . ,Rest::extent_callback)
455 (molecule-callback . ,Rest::brew_molecule)
456 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
457 (minimum-beam-collision-distance . 1.5)
458 (meta . ,(grob-description "Rest"
459 rhythmic-head-interface
460 staff-symbol-referencer-interface
464 (minimum-distance . 0.75)
465 (meta . ,(grob-description "RestCollision" rest-collision-interface ))
469 ;; don't set direction here: it breaks staccato.
470 (molecule-callback . ,Script::brew_molecule)
472 (X-offset-callbacks . (,Side_position_interface::centered_on_parent))
473 (before-line-breaking-callback . ,Script::before_line_breaking)
474 (meta . ,(grob-description "Script" script-interface side-position-interface font-interface))
478 (before-line-breaking-callback . ,Script_column::before_line_breaking)
479 (meta . ,(grob-description "ScriptColumn" script-column-interface))
483 (molecule-callback . ,Slur::brew_molecule)
485 (spacing-procedure . ,Spanner::set_spacing_rods)
486 (minimum-length . 1.5)
487 (after-line-breaking-callback . ,Slur::after_line_breaking)
488 (extremity-rules . ,default-slur-extremity-rules)
489 (extremity-offset-alist . ,default-slur-extremity-offset-alist)
490 (de-uglify-parameters . ( 1.5 0.8 -2.0))
491 (Y-extent-callback . ,Slur::height)
492 (details . ((height-limit . 2.0) (ratio . 0.333) (force-blowfit . 0.5)
493 (bezier-pct-c0 . -0.2) (bezier-pct-c3 . 0.000006)
494 (bezier-pct-out-max . 0.8) (bezier-pct-in-max . 1.2)
495 (bezier-area-steps . 1.0)))
498 (attachment . (#f . #f))
499 (attachment-offset . ((0 . 0) . (0 . 0)))
501 (meta . ,(grob-description "Slur" slur-interface))
505 (spacing-procedure . ,Spacing_spanner::set_springs)
506 (stem-spacing-correction . 0.5)
507 (arithmetic-basicspace . 2.0)
508 (arithmetic-multiplier . ,(* 0.9 1.32))
509 ;; assume that notes at least this long are present.
510 (maximum-duration-for-spacing . ,(make-moment 1 8))
511 (meta . ,(grob-description "SpacingSpanner" spacing-spanner-interface))
514 (break-align-symbol . Staff_bar)
515 (bar-size-procedure . ,Span_bar::get_bar_size)
516 (molecule-callback . ,Span_bar::brew_molecule)
517 (visibility-lambda . ,begin-of-line-invisible)
518 (X-extent-callback . ,Span_bar::width_callback)
519 (Y-offset-callbacks . (,Span_bar::center_on_spanned_callback))
523 (before-line-breaking-callback . ,Span_bar::before_line_breaking)
527 ;; Ross. page 151 lists other values, we opt for a leaner look
531 (hair-thickness . 1.6)
532 (thick-thickness . 6.0)
533 (meta . ,(grob-description "SpanBar" span-bar-interface bar-line-interface ))
538 (molecule-callback . ,Text_item::brew_molecule)
539 (break-align-symbol . Clef_item)
540 (visibility-lambda . ,begin-of-line-visible)
541 (font-family . roman)
542 (meta . ,(grob-description "StanzaNumber" break-aligned-interface text-interface font-interface))
546 (molecule-callback . ,Staff_symbol::brew_molecule)
550 (meta . ,(grob-description "StaffSymbol" staff-symbol-interface ))
553 (molecule-callback . ,Text_item::brew_molecule)
555 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
556 (Y-offset-callbacks .
557 (,Side_position_interface::aligned_side
558 ,Side_position_interface::centered_on_parent))
559 (no-spacing-rods . #t)
560 (font-shape . italic)
561 (self-alignment-X . 0)
562 (meta . ,(grob-description "SostenutoPedal" text-interface font-interface))
566 (before-line-breaking-callback . ,Stem::before_line_breaking)
567 (molecule-callback . ,Stem::brew_molecule)
569 (beamed-lengths . (0.0 2.5 2.0 1.5))
570 (beamed-minimum-lengths . (0.0 1.5 1.25 1.0))
572 ;; Stems in unnatural (forced) direction should be shortened,
573 ;; according to [Roush & Gourlay]. Their suggestion to knock off
574 ;; a whole staffspace seems a bit drastical: we'll do half.
576 (lengths . (3.5 3.5 3.5 4.5 5.0))
577 (stem-shorten . (0.5))
578 ; if stem is on middle line, choose this direction.
579 (neutral-direction . 1)
580 (X-offset-callbacks . (,Stem::off_callback))
581 (X-extent-callback . ,Stem::dim_callback)
582 (Y-extent-callback . ,Stem::height)
583 (meta . ,(grob-description "Stem" stem-interface font-interface))
587 (molecule-callback . ,Stem_tremolo::brew_molecule)
588 (Y-extent-callback . ,Stem_tremolo::height)
589 (X-extent-callback . #f)
591 (beam-width . 2.0) ; staff-space
592 (beam-thickness . 0.42) ; staff-space
593 (beam-space-function . ,default-beam-space-function)
594 (meta . ,(grob-description "StemTremolo" stem-tremolo-interface ))
598 (meta . ,(grob-description "SeparationItem" separation-item-interface ))
600 (SeparatingGroupSpanner . (
601 (spacing-procedure . ,Separating_group_spanner::set_spacing_rods)
602 (meta . ,(grob-description "SeparatingGroupSpanner" separation-spanner-interface))
606 (no-spacing-rods . #t)
607 (molecule-callback . ,Sustain_pedal::brew_molecule)
608 (self-alignment-X . 0)
610 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
611 (Y-offset-callbacks .
612 (,Side_position_interface::aligned_side
613 ,Side_position_interface::centered_on_parent))
615 (meta . ,(grob-description "SustainPedal" sustain-pedal-interface side-position-interface font-interface))
618 ;; TODO: should split in 3
619 (SystemStartDelimiter . (
620 (molecule-callback . ,System_start_delimiter::brew_molecule)
621 (after-line-breaking-callback . ,System_start_delimiter::after_line_breaking)
622 ;; really 4.0, but 5 to be on safe side.
623 (brace-collapse-height . 5.0)
624 (bracket-collapse-height . 1)
631 (bracket-thick . 0.25)
632 (Y-extent-callback . #f)
633 (font-family . braces)
634 ;; if you want to set point-size, you cannot set
635 ;; relative-size, as no font will be found for other
637 ;;(font-design-size . 20)
638 ;;(font-relative-size . #f)
639 (meta . ,(grob-description "SystemStartDelimiter" system-start-delimiter-interface font-interface))
643 (molecule-callback . ,Text_item::brew_molecule)
644 (no-spacing-rods . #t)
647 ;; todo: add X self alignment?
649 (font-family . roman)
650 (meta . ,(grob-description "TextScript" text-script-interface text-interface side-position-interface font-interface ))
653 (molecule-callback . ,Text_spanner::brew_molecule)
654 (font-family . roman)
657 ;; urg, only for (de)cresc. text spanners
658 (if-text-padding . 1.0)
662 (meta . ,(grob-description "TextSpanner" text-spanner-interface font-interface))
665 (molecule-callback . ,Tie::brew_molecule)
666 (spacing-procedure . ,Spanner::set_spacing_rods)
667 (staffline-clearance . 0.35)
668 (details . ((ratio . 0.333) (height-limit . 1.0)))
671 (minimum-length . 2.5)
672 (meta . ,(grob-description "Tie" tie-interface ))
676 (after-line-breaking-callback . ,Tie_column::after_line_breaking)
677 (meta . ,(grob-description "TieColumn" tie-column-interface ))
681 (molecule-callback . ,Time_signature::brew_molecule)
682 (break-align-symbol . Time_signature)
683 (visibility-lambda . ,all-visible)
686 (font-family . number)
687 (meta . ,(grob-description "TimeSignature" time-signature-interface font-interface))
694 (after-line-breaking-callback . ,Tuplet_bracket::after_line_breaking)
695 (molecule-callback . ,Tuplet_bracket::brew_molecule)
696 (font-family . roman)
697 (font-shape . italic)
698 (font-relative-size . -1)
699 (meta . ,(grob-description "TupletBracket" text-interface
700 tuplet-bracket-interface font-interface))
704 (molecule-callback . ,Text_item::brew_molecule)
705 (font-shape . italic)
706 (no-spacing-rods . #t)
707 (self-alignment-X . 0)
709 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
710 (Y-offset-callbacks .
711 (,Side_position_interface::aligned_side
712 ,Side_position_interface::centered_on_parent))
713 (meta . ,(grob-description "UnaCordaPedal" text-interface font-interface))
717 (molecule-callback . ,Volta_spanner::brew_molecule)
722 (Y-offset-callbacks . (,Side_position_interface::aligned_side))
723 (thickness . 1.6) ; stafflinethickness
724 (height . 2.0) ; staffspace;
726 (font-family . number)
727 (font-relative-size . -2)
728 (meta . ,(grob-description "VoltaBracket" volta-bracket-interface side-position-interface font-interface))
731 (VerticalAlignment . (
733 (Y-extent-callback . ,Axis_group_interface::group_extent_callback)
734 (X-extent-callback . #f)
737 (meta . ,(grob-description "VerticalAlignment" align-interface axis-group-interface))
740 (VerticalAxisGroup . (
742 (meta . ,(grob-description "VerticalAxisGroup" axis-group-interface))
748 ; (display (map pair? all-grob-descriptions))